| Patents for B43L 13 - Drawing instruments, or writing or drawing appliances or accessories, not otherwise provided for (6,769) |
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| 06/20/2002 | CA2431239A1 Drawing aid device |
| 06/19/2002 | CN2495481Y Telescopic compass/ruler |
| 06/12/2002 | CN2494763Y Multipurpose ruler |
| 06/06/2002 | US20020066195 Hand drawing machine |
| 05/29/2002 | CN2493429Y Multi-function lattice rule |
| 05/29/2002 | CN2493428Y Multi-functional lattice rule |
| 05/22/2002 | CN2492400Y Rule for driving line segment into any equal portions |
| 05/22/2002 | CA2363445A1 Adjustable template |
| 05/15/2002 | CN2491249Y Multifunctional compasses |
| 05/15/2002 | CN2491248Y Multifunctional angle square |
| 05/15/2002 | CN2491247Y Replaying tool |
| 05/15/2002 | CN2491246Y Baffle type holding device for pen |
| 05/15/2002 | CN2491245Y Device for uniform dividing any angle |
| 05/15/2002 | CN2491238Y Dual-purpose rail for writing and drawing |
| 05/08/2002 | CN2489983Y Angle square with structure for changing angle |
| 05/08/2002 | CN2489982Y Multipurpose drawing instrument used as ruler, compasses and angulometer |
| 05/01/2002 | CN2488704Y Ruler |
| 05/01/2002 | CN2488703Y Pen-holding correcting device |
| 05/01/2002 | CN1346750A Method and dedicated device for once division of any angle or line |
| 04/24/2002 | CN2487564Y Multifunctional compasses |
| 04/24/2002 | CN2487563Y Protractor with auxiliary ruler |
| 04/17/2002 | CN2486348Y Multipurpose ruler |
| 04/10/2002 | CN2485155Y Straight angular ruler |
| 04/10/2002 | CN2485154Y Multifunctional compasses |
| 04/10/2002 | CN2485153Y Three-purpose ruler |
| 04/10/2002 | CN2485152Y Multifunctional ruler |
| 04/09/2002 | US6368002 Parking mechanism for storing and exchanging end effectors used in a system for performing actions over vertical surfaces |
| 04/09/2002 | US6367902 Effector platform for performing actions over vertical surfaces |
| 04/03/2002 | CN1342561A Folding type right-angle ruler |
| 03/27/2002 | CN2483203Y Templet for drawing curve having grooves |
| 03/27/2002 | CN2483202Y Instrument for quick drawing |
| 03/27/2002 | CN2483201Y Multi-functional instrument for drawing circulr-curve or angles |
| 03/26/2002 | US6361134 Flat bed raster drawing machine |
| 03/21/2002 | US20020032969 Scribing apparatus and method |
| 03/19/2002 | US6358341 Method of using photoalbum templates |
| 03/19/2002 | US6357130 Drafting template for preparing axonometric drawings |
| 03/06/2002 | CN2480166Y Convenient rule |
| 03/05/2002 | US6351893 Self squaring accident diagramming template |
| 03/01/2002 | CA2317212A1 Drafting device |
| 02/28/2002 | WO2002016148A1 Measuring device |
| 02/27/2002 | CN2478794Y Convenient angulometer |
| 02/27/2002 | CN2478793Y Drawing tool |
| 02/20/2002 | CN2478182Y Mathematics coordinate rule |
| 02/20/2002 | CN2477402Y Deformable ruler |
| 02/20/2002 | CN2477401Y Fast marker |
| 02/20/2002 | CN2477400Y Protractor |
| 02/20/2002 | CN2477399Y Multifunctional ruler |
| 02/20/2002 | CN2477398Y Equal round drawing board |
| 02/20/2002 | CN2477396Y Multifunctional compasses |
| 02/13/2002 | CN2476425Y Combined drawing appliance |
| 02/13/2002 | CN2476424Y Multipurpose drawing rule |
| 02/06/2002 | CN2475572Y Angle resolver |
| 02/06/2002 | CN2475571Y Multifunctional graduated scale |
| 01/30/2002 | CN2474347Y Multifunction blackboard eraser |
| 01/30/2002 | CN2474346Y Apparatus for trisection of arbitrary angle |
| 01/30/2002 | CN2474345Y Rule for drawing cycle |
| 01/29/2002 | US6341853 Continuous refill of spring bag reservoir in an ink-jet swath printer/plotter |
| 01/23/2002 | EP1174281A2 Drawing device in form of raster-plotters |
| 01/23/2002 | CN2472967Y Combined rule for pupil drawing picture |
| 01/23/2002 | CN2472966Y Square rule |
| 01/16/2002 | CN2471557Y Multifunctional drawing instrument for teaching |
| 01/16/2002 | CN2471556Y Two-purpose compasses |
| 01/09/2002 | CN2470133Y Multi-purpose compasses |
| 01/09/2002 | CN2470132Y Plane multi-function triangle |
| 01/08/2002 | CA2210712C Improved instruments for drawing circles |
| 01/03/2002 | US20020001025 Ink feeding circuit device for raster drawing machines |
| 01/02/2002 | CN2468761Y Multi-functional geometric drawing ruler |
| 01/02/2002 | CN2468760Y Drawing instrument for copying other drawings |
| 12/18/2001 | US6330752 Adjustable squaring tool |
| 12/05/2001 | CN2463184Y Multi-purpose scriber |
| 12/04/2001 | US6326609 Scanning drawing apparatus |
| 11/28/2001 | CN2461781Y 多功能格尺 Multifunctional ruler |
| 11/28/2001 | CN2461780Y Conic gauge |
| 11/27/2001 | US6321459 Device for assisting a user to draw a topographical contour map |
| 11/21/2001 | CN2460323Y Templat for standardization examination answer |
| 11/21/2001 | CN2460322Y Multifunction teaching ruler |
| 11/21/2001 | CN2460321Y Multifunction stationery ruler |
| 11/06/2001 | US6311539 Method for calibrating an edge detection system in a friction drive apparatus |
| 10/24/2001 | CN2455484Y Traffic accident drawing instrument |
| 10/23/2001 | US6305090 Tile tracing apparatus and method |
| 10/17/2001 | CN2454150Y Multifunction mathematics form-palte for students |
| 10/17/2001 | CN2454149Y Combined ruler-gauge for teaching |
| 10/17/2001 | CN1073022C Stencil for making drawings with obtention of virtual-depth effect and method for using it |
| 10/10/2001 | CN2452754Y Aiding card for answer sheet |
| 10/10/2001 | CN2452753Y Steel tube type distance measuring means |
| 10/10/2001 | CN2452752Y Quick determining arc center type pattern plate |
| 10/10/2001 | CN2452751Y Multi-functional compasses |
| 10/03/2001 | CN2451350Y Multipurpose combined ruler |
| 10/03/2001 | CN2451349Y Multifunction drawing tool |
| 09/19/2001 | CN2448577Y Board for writing artistic calligraphy |
| 09/19/2001 | CN2448576Y Multi-function template rule |
| 09/19/2001 | CN2448575Y Multi-purpose lattice drawing apparatus |
| 09/19/2001 | CN2448574Y Protractor |
| 09/19/2001 | CN2448573Y Device for drawing ellipse |
| 09/18/2001 | US6290320 Calibration technique for test patterns from multiple color inkjet printheads |
| 09/18/2001 | US6289594 Drywall marking and scoring guide |
| 09/13/2001 | US20010020334 Drywall marking and scoring guide |
| 09/05/2001 | CN2445937Y Board for writing training, tracing and drawing |
| 08/29/2001 | CN2444783Y Multipurpose arc drawing instrument |
| 08/29/2001 | CN1070123C Setting method of focus curve gauge and its apparatus |